Add assert_log method to TestLogger to harden test

[rust-lightning] / lightning / src / util / test_utils.rs

diff --git a/lightning/src/util/test_utils.rs b/lightning/src/util/test_utils.rs
index 6ea1265c3107603f25be46d272b64811b28dd870..4381e21768c0be0a7665cfe0ce190353fdeff5dc 100644 (file)
--- a/lightning/src/util/test_utils.rs
+++ b/lightning/src/util/test_utils.rs
@@ -22,6 +22,7 @@ use secp256k1::{SecretKey, PublicKey};
 use std::time::{SystemTime, UNIX_EPOCH};
 use std::sync::{Arc,Mutex};
 use std::{mem};
+use std::collections::HashMap;
 
 pub struct TestVecWriter(pub Vec<u8>);
 impl Writer for TestVecWriter {
@@ -190,6 +191,7 @@ impl msgs::RoutingMessageHandler for TestRoutingMessageHandler {
 pub struct TestLogger {
        level: Level,
        id: String,
+       pub lines: Mutex<HashMap<(String, String), usize>>,
 }
 
 impl TestLogger {
@@ -200,15 +202,21 @@ impl TestLogger {
                TestLogger {
                        level: Level::Trace,
                        id,
+                       lines: Mutex::new(HashMap::new())
                }
        }
        pub fn enable(&mut self, level: Level) {
                self.level = level;
        }
+       pub fn assert_log(&self, module: String, line: String, count: usize) {
+               let log_entries = self.lines.lock().unwrap();
+               assert_eq!(log_entries.get(&(module, line)), Some(&count));
+       }
 }
 
 impl Logger for TestLogger {
        fn log(&self, record: &Record) {
+               *self.lines.lock().unwrap().entry((record.module_path.to_string(), format!("{}", record.args))).or_insert(0) += 1;
                if self.level >= record.level {
                        println!("{:<5} {} [{} : {}, {}] {}", record.level.to_string(), self.id, record.module_path, record.file, record.line, record.args);
                }